Dwight White died last week from complications from back surgery.
I couldn't find a list of other untimely deaths, but here are a few I remember.
David Little, 2005 Died from dropping a 250 lbs on his neck while lifting weights.
Steve Courson, 2005 Died when a tree he cut down in his backyard fell on him.
Ray Mansfield dies while hiking in the Grand Canyon
Ernie Holmes, 2008 Died in a one car accident (Years earlier, he led police on a high speed chase in which he fired rifle shots at a police helicopter)
Mike Webster, 2002 Died of a heart attack after suffering from mental illness for several years.